Fix for issue 3534?

Changes:

- Don't display saved queries if the user is not logged in on mobile

I *think* this may be the cause of the error; I can't reproduce it locally or with a test instance, however. But if the user isn't logged in, querying for saved queries retrieves *all* queries from all users, which naturally would lead to a memory error.

Issue: https://code.google.com/p/sympy/issues/detail?id=3534

(As a side note, the markup for Live is rather ugly.)